Juice your oranges. Strain the pulp and seeds out, reserving the juice and discarding the solids.
In a champagne flute, add the blood orange juice and Cointreau.
Add ice if desired, then top with champagne.
Garnish with fresh mint and orange slices, then drink up!
Serving: 1, Calories: 302kcal, Carbohydrates: 38g, Protein: 0.9g, Fat: 0.4g, Sodium: 4.2mg, Fiber: 0.2g, Sugar: 35g